This constant current source for high voltage loads was obtained from a 1967 General Electric documentation. The components are of the time, but allow equivalents.
This circuit is from 1995 documentation. The power depends on the transformer, which in this case...
This circuit was found in an American 1980s documentation. It is a circuit that can be used to...
This circuit is based on an operational window comparator. We found it in a documentation from the...